Digital LCD Oscilloscope JYE Tech 068 DIY KIT

Well, it is defiantly a kit. Too bad the kit contained the wrong assembly instructions. I reviewed all the parts using the parts list that was part of the assembly instructions and found parts missing. They sent a Revision F Assembly Instruction when in fact, they should have sent a Revision H assembly instruction, which when I downloaded one (Rev H) from the mfg. website, all the parts were there. Wasted 2 hours doing a recheck of all of the parts. Also, the so called assembly instruction is no more that instructions telling you to install the parts in the order they are listed on the parts list. Furthermore, any pictures provided need to be magnified or resized on your computer so you might be able to use them. Next, this is not an easy kit to assemble defiantly not for the beginner or casual builder. Many of the through hole connections are very close and can easily be bridged, I bridged a few myself and I have built SMD kits with no problems. If you build one ,check and recheck all of your soldered connections and also where you placed the part as it is easy to put the part in the wrong thru holes. Well, after several days, I finished the kit and it appears to be working ok. I still need to run a few more test on the circuits. By the way, good luck if you use the option boards to use the DSO on battery power. I just use the usb connector and have an external battery pack (USB 5 Volt 1.2 Amp) I use for charging my phones and that works great. TIP: Supersize all the pictures provided in the assembly instruction manual ( 2 whole pages of instructions) that should help you some.

This kit is NOT for beginners. The instructions are really just a list of parts in assembly order. Everything is very small, there's a lot of stuff on this little board. You need a fine tip soldering iron, a good multi-meter, plenty of light & a magnifier. The 1/8 watt resistors are hard to read so I used my multi-meter to determine the values. Less chance of a mistake then. A magnifying glass is indispensable for reading the values on capacitors and other components. There are 5 "BOB" (Board on Board?") boards of which at least 2 need to be installed. They stand vertical to the main board and you're supposed to make a solder bridge from the pads on the BOB to corresponding pads on the main board. This sounds a lot easier than it really is. It is very easy to lift one of printed circuit pads with too much heat from the soldering iron tip. Since the pads on the BOB boards have eyelet holes for each pad, I used a piece of wire from component leads soldered to each eyelet. I used a soldering aide to bend the wire so that it contacts the pad on the main board. I used a piece of blue tack to secure the BOB board in place as I soldered the connections. The kit has a fixture to hold the BOB boards but I found it more trouble that it was worth. Outside of fixing a couple of solder bridges, the unit fired up without any major problems. After I had adjusted the compensating capacitors per the instructions and calibrated the scope probe (a nice probe by the way), the unit started rebooting itself. I checked all the voltages and the reset circuit but made no headway. When I went to the tech forum on the manufacturer's website, www.jyetech.com, I found that others had had the same problem. There was a fix outlined in the postings that worked. There is also updated firmware to correct this problem. I did not try to make the unit run off an internal battery. There is a procedure to do this on their website but I choose to power it off the USB port. You can also use a battery pack of 5 volts or less to power the unit.Having said all that, I think this is a neat little scope. It does work and gives a reasonable trace and the frequency meter works well. You can also use it as a square wave generator to about 10 KHz. There are a ton of other features that I haven't tried. yet.

Fun build, but only if you assemble things like this frequently.My kit was missing a few components here and there that I needed to source from my own parts.Still missing one of the switch covers.The LCD provided was DOA causing the unit to work only after tweaking and replacement of stock display.Overall, fun to build, but only if you don’t mind a headache. If you’re looking for a beginner scope kit, keep looking. If you’re looking for a professional scope, don’t buy a kit :)If you want a fun project to waste a day on, and enjoy the process, then o recommend this.

took a bit of work, but finally got it working properly. handy little troubleshooting tool.

This took me about 6 hours to assemble over the course of a couple days, lot of tiny parts. A magnifier lamp or similar is absolutely required to assemble this, trying to read the resistor values even with magnification was difficult, so I just used my meter to measure them. The BOB boards that you solder to the main board are a bit of a pain, patience is helpful here. Very easy to bridge two connections if you're not careful, inspect your work. I used a weller adjustable 40 watt iron with a chisel tip because it's what I had, so that made it a challenge as well. The adjustment pot and switches that they attach to the board are NOT soldered, theyre just stuck in there, so make sure to solder them. I almost missed it.Everything fired up fine after I checked all the voltage rails, haven't had a chance to test much yet.

After a long tedious and careful assembly following instructions the unit needs to pass some tests before proceeding with final assembly... I would have better to test the first power test done very early in assembly in the event of bad processor or crystal that you wouldn't continue.SINCE NOOELEC wont stand behind defective units --- WHY BUY any KIT from them !